400402682 has 16 divisors (see below), whose sum is σ = 614234880. Its totient is φ = 195669648.

The previous prime is 400402657. The next prime is 400402693. The reversal of 400402682 is 286204004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76328 + ... + 81404.

It is an arithmetic number, because the mean of its divisors is an integer number (38389680).

Almost surely, 2^400402682 is an apocalyptic number.

400402682 is a deficient number, since it is larger than the sum of its proper divisors (213832198).

400402682 is a wasteful number, since it uses less digits than its factorization.

400402682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5965.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 400402682 is about 20010.0645176371. The cubic root of 400402682 is about 737.0534656675.

Adding to 400402682 its reverse (286204004), we get a palindrome (686606686).

The spelling of 400402682 in words is "four hundred million, four hundred two thousand, six hundred eighty-two".